hostportstr = p_new(char, hostportlen);
snprintf (hostportstr, hostportlen, "%s:%d", SmtpHost, SmtpPort);
if (!smtp_set_server (session, hostportstr))
hostportstr = p_new(char, hostportlen);
snprintf (hostportstr, hostportlen, "%s:%d", SmtpHost, SmtpPort);
if (!smtp_set_server (session, hostportstr))